A Text-book of Mineralogy: With an Extended Treatise on Crystallography and Physical Mineralogy

albite amphibole antimony apatite arsenic axial angle basal birefringence blue bluish Brittle brown brownish calcite calcium carbonate charcoal chlorite Cleavage closed tube Color white colorless common Comp compact compounds conchoidal copper corundum crystalline crystallographic crystals dark distinct edges epidote faces feldspar fibrous flame fluorite formula Fracture uneven fuses garnet gives granular gray grayish green greenish hence hexagonal hydrochloric acid hydrous iron isometric light limestone Luster Luster metallic Luster vitreous manganese masses massive mica mineral mines monoclinic nearly Obs.-Occurs occurs octahedrons opaque optical orthoclase orthorhombic oxide pale parallel plane of symmetry Pleochroism polarized position prism prismatic pyramid pyrite pyroxene quartz rare ratio reddish refractive refractive index rhombohedral rocks salt serpentine Silica silver soda Soluble sometimes species specific gravity sphalerite Streak structure sulphide sulphur surface Sweden symbol tabular tetragonal thin tourmaline translucent Transparent triclinic twinning usually varieties vertical axis yellow yellowish